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22549 is a prime number
BaseRepresentation
bin101100000010101
31010221011
411200111
51210144
6252221
7122512
oct54025
933834
1022549
1115a3a
1211071
13a357
148309
156a34
hex5815

22549 has 2 divisors, whose sum is σ = 22550. Its totient is φ = 22548.

The previous prime is 22543. The next prime is 22567. The reversal of 22549 is 94522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22500 + 49 = 150^2 + 7^2 .

It is a cyclic number.

It is not a de Polignac number, because 22549 - 23 = 22541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11274 + 11275.

It is an arithmetic number, because the mean of its divisors is an integer number (11275).

222549 is an apocalyptic number.

It is an amenable number.

22549 is a deficient number, since it is larger than the sum of its proper divisors (1).

22549 is an equidigital number, since it uses as much as digits as its factorization.

22549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 22549 is about 150.1632445041. The cubic root of 22549 is about 28.2515596810.

It can be divided in two parts, 225 and 49, that multiplied together give a square (11025 = 1052).

The spelling of 22549 in words is "twenty-two thousand, five hundred forty-nine".